InChI=1S/C21H22O10/c22-11-6-7-15(30-21-18(27)16(25)17(26)19(31-21)20(28)29)12(8-11)14(24)9-13(23)10-4-2-1-3-5-10/h1-8,13,16-19,21-23,25-27H,9H2,(H,28,29)